Table Of Contents - Akai 4400 Service Manual

U.
iH.
IV.
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VIL
SECTION 1
SERVICE MANUAL
TABLE OF CONTENTS
SPECIFICATIONS
MEASURING METHOD
1, TAPE SPEED DEVIATION
2, WOW AND FLUTTER
3, FREQUENCY RESPONSE . -
4, SIGNAL TO NOISE RATIO .
5
6.
7
8
. TOTAL HARMONIC DISTORTION FACTOR . .
. CROSS TALK (Cross talk between the tracks) ....
. ERASE RATIO
. POWER OUTPUT (4400 only)
DISMANTLING OF UNIT .....--
OPEN REEL MECHANISM ADJUSTMENTS
1, PINCH WHEEL ADJUSTMENT «0.0.0... 00s esc e cece rene ees
2, SUPPLY REEL SHAFT ASSEMBLY ADJUSTMENT
3, TAKE-UP REEL SHAFT ASSEMBLY ADJUSTMENT.
4, RECORDING/PLAY BACK CHANGING MECHANISM
HEAD ADJUSTMENTS . .
1, HEAD HEIGHT ADJUSTMENT .
2. HEAD SLANT ADJUSTMENT ..
3, HEAD AZIMUTH ALIGNMENT ADJUSTMENT
AMPLIFIER ADJUSTMENTS . . . . -
1, PLAYBACK LEVEL ADJUSTMENT .
2, RECORDING LEVEL ADJUSTMENT b p est
3, RECORDING BIAS FREQUENCY ADJUSTMENT ........-.
4, RECORDING BIAS VOLTAGE ADJUSTMENT (FREQUENCY RESPONSE ADJUSTMENT). . 13
5, ERASE VOLTAGE
DC RESISTANCE ....
i, HEAD DC RESISTANCE
2, MOTOR DC RESISTANCE
'VIE. COMPOSITE VIEWS OF COMPONENTS ......---- 5-2-2222 eect e centr eee ener 16